인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Tropical peatlands, which store 20% of global peat carbon, are increasingly threatened by conversion to alternative land-uses such as oil palm plantations, pulp wood plantations, crop growth or other economic activities. This transformation involves peatland drainage, which lowers water tables, exposes peat to oxygen, and alters greenhouse gas (GHG) emissions: increasing carbon dioxide (CO<sub>2</sub>) and nitrous oxide (N<sub>2</sub>O) fluxes while reducing methane (CH<sub>4</sub>) emissions from soils. However, drainage ditches created in the process may become significant sources of CH<sub>4</sub> due to anoxic conditions. This study quantified GHG fluxes from drainage ditches in Sarawak, Malaysia, through spatial sampling conducted during the daytime in the transitional period between the drier and wetter seasons using portable trace gas analyzers. Median fluxes were 0.19 g CH<sub>4</sub> m<sup>-2</sup> d<sup>-1</sup>, 17.1 g CO<sub>2</sub> m<sup>-2</sup> d<sup>-1</sup>, and - 0.12 mg N<sub>2</sub>O m<sup>-2</sup> d<sup>-1</sup>. Physical water parameters such as pH, oxygen concentration, temperature, and oxidation-reduction potential were found to be significant drivers of GHG fluxes. The median emissions from ditches in one hectare of land were 5.84 kg CO<sub>2</sub> ha<sup>-1</sup> d<sup>-1</sup>, 2.78 kg CH<sub>4</sub> as CO<sub>2</sub> eq ha<sup>-1</sup> d<sup>-1</sup>, and - 0.001 kg N<sub>2</sub>O as CO<sub>2</sub> eq ha<sup>-1</sup> d<sup>-1</sup>. These findings underscore the role of drainage ditches as CH<sub>4</sub> sources in tropical peatland agriculture, highlighting the need for further research into GHG management in these modified landscapes.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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